The previous superblock has passed recently. At this moment, no new proposals have been submitted yet. Either submit your own proposal or check back later.
How-To: Vote instructions
At present time, voting on proposals is only possible with Masternodes. This is not (yet) supported on Systemnodes, but it might in the future.
To vote with your Masternode(s), follow these steps:
1) Code
Click to copy vote yes command.
Click to copy vote no command.
The vote command is automatically copied to your clipboard (Win: Ctrl+V, Mac: Cmd+V).
2) Wallet
Open your Crown QT wallet.
Click Tools > Debug console (opens the console).
3) Vote
Paste the vote command in the commandline and press ENTER.
If all went well, you got the confirmation: "Voted successfully".
Voila, that's all. You're done!
Note: If you want to vote per Masternode, replace vote-many with vote-each in the copied command.